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Finding the Fourth Proportional to 664,381.62, 996,730.11 and 215,102.52

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Solution

The fourth proportional to 664,381.62, 996,730.11 and 215,102.52 is: 322,704.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,381.62 : 996,730.11 = 215,102.52 : x
  2. Step 2: Convert to fraction form
    664,381.62/996,730.11 = 215,102.52/x
  3. Step 3: Cross multiply
    664,381.62x = 996,730.11 × 215,102.52
  4. Step 4: Simplify right side
    664,381.62x = 214,399,158,420.88
  5. Step 5: Solve for x
    x = 214,399,158,420.88/664,381.62
  6. Step 6: Final answer
    x = 322,704.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.